Large ethiopian Shewa Opal: Polished Chocolate Opal Gemstone 10.71 grams New In 7cm long pebble is a

7cm long pebble is a section from a Fossil Wood log that has been polished to reveal the vividly coloured Jaspers which have replaced the original wood very slowly in the process of silicification

To clean the delicate crystal

Chrysocolla has been used historically as a copper ore

The month for opal birthstone is October

Large ethiopian Shewa Opal: Polished Chocolate Opal Gemstone 10.71 grams New In 7cm long pebble is aPrecious Opals For Sale: Ethiopian Opals And Polished Opal Gemstones (Ethiopian Shewa Opal Chocolate Opal) This 10. 71 gram gorgeous flashy Large Hand Polished Ethiopian Opal Gemstone and measuring 2. 5cm long is a unique Polished Chocolate Brown Opal from Ethiopia, and a stunning iridescent precious opal gem which flashes with a rainbow of opalescent colour. This rare opal type is known as an Ethiopian Shewa Opal, Chocolate Opal, or Mezezo Opal